val intList = new ArrayList[Int]()
for (i <- 1 to 5) {
  intList.add(i)
}

val oddNoList = new ArrayList[Int]()
for (i <- 0 until intList.size) {
  if (intList.get(i) % 2 == 1) oddNoList.add(intList.get(i))
}

val squareList = new ArrayList[Int]()
for (i <- 0 until oddNoList.size) {
  squareList.add(oddNoList.get(i) * oddNoList.get(i))
}

var sum = 0
for (i <- 0 until squareList.size()) {
  sum += squareList.get(i)
}
System.out.println("Sum : " + sum)

val pow2 = (x: Int) => x * x
val functionalResult = (1 to 5).filter(_ % 2 == 1).map(pow2).sum
println("Sum : "+functionalResult)